双稳系统中非周期随机共振的数值仿真  

Numerical Simulations of Aperiodic Stochastic Resonance in Bistable Systems

作　　者：段江海[1] 宋爱国[1] 

机构地区：[1]东南大学仪器科学与工程系,江苏南京210096

出　　处：《电路与系统学报》2004年第5期149-152,共4页Journal of Circuits and Systems

基　　金：国家自然科学基金资助项目(69875004)

摘　　要：本文采用互相关方法研究了噪声和随机二进制信号同时激励双稳系统(施密特触发器和双势阱系统)时的输出响应,观察到非周期随机共振;利用双稳系统中的非周期随机共振效应,可以减小随机信号传输中的噪声水平,改善输出信号质量,这在数字通信领域具有十分重要的意义。By means of cross-correlation measurements, the nonlinear response of bistable systems, including the Schmitt trigger and the double-well systems, to a random binary signal contaminated with variable amount of noise is studied. The behavior of such kind of systems is called aperiodic stochastic resonance (ASR). ASR effect in bistable systems can be used to reduce the noise level of random signal transmission and improve the quality of output signal, which is of great significance in the field of digital communications.

关 键 词：非周期随机共振 双稳系统 互相关 

分 类 号：TN911[电子电信—通信与信息系统]